E x e r c i s e s. a) give derivatives of:

I. Wordbuilding:

a) give derivatives of:

b) to move, to extend, to use, to graduate, to survey, to equip

c) what are the following words composed of:

d) a levelman, a rodman, self-reading, underground

e) find suffixes of:

f) commonest, movable, permanently, thousandth, usually, extensible graduation, thickness, correction

g) d) form adverbs from adjectives:

h) common, usual, chief, large, exact, accurate, local

ІІ.Read the following technical abbreviations and fractions:

Ft., Fig., In., 0.1, 0.01, 0.05, 2.06,1/2, 2/3. I 1/2. 4/5. ¼

ІІІ. Find participles II in the text and define their functions.

IV. Write out of the text word-combinations of three components and translate them.

V. Find the missing word from the text:

1. The New York rod has a ….. for reading. 2. Steel tapes are chiefly used in …..

5. The telescope is mounted on …..

VI. Construct the sentence to illustrate the difference between the dumpy-level and Y-level.

VII. Say what advantages of magnetic observatories are.

VIII. Comprehension questions;

I, How long are commonly steel tapes? 2. Why are longer tapes thicker? 3. How are the lighter tapes graduated? 4. Why are steel tapes fitted with a thermometer? 5.What is a spring balance used for in steel tapes?6. How can broken tapes be mended? 7. How long are pocket steel tapes? 8. What types of levelling rods do you know? 9. Why are levelling rods made of two or more sections? 10. What graduations has a self-reading rod? I1. What are the commonest types of the engineer's level?

IX. Annotate the paragraph about levelling rods.

X. Speak about:

a) lighter and heavier steel tapes; b) pocket steel tapes,c) a self-reading levelling rod; d) an engineer's level.

Text B

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